Changing The Configuration - Viessmann Vitocrossal CRU 800 Service Instructions For Contractors

Burner control unit VUC 310
Overview sub-menu to menu "1"
"Status" display "Service" display
1 Start counter, 1 digit
2 Start counter, 1000 digit
3 Hours run meter, 1 digit
4 Hours run meter, 1000 digit
Overview sub-menu to menu "2"
"Status" display "Service" display
1 Start counter with reset, 1 digit
2 Start counter with reset, 1000 digit
3 Menu point for deleting the start-up meter reading
4 Hours run meter with reset, 1 digit
5 Hours run meter with reset, 1000 digit
6 Menu point for deleting the hours run meter reading
Example: Resetting the hours run meter reading
Press the following buttons:
1. S longer than 2 s; " " flashes.
2. until "2" is shown under "Service".
3. S to confirm; "2" is shown under "Status". "1" is
shown under "Service".

Changing the configuration

The following configurations can be carried out:
■ Menu "5": Temporarily display an item of process
information in the operating display.
Note
Pressing reset button R or switching the power con-
nection off and on again will return the operating dis-
play to the default display, showing the start and test
functions during burner start.
■ Menu "6": Set parameters for the control functions of
the burner control unit.
The factory settings of the operating parameters
depend on the coding card of burner control unit.
The operating parameters can also be set via the
Vitotronic control unit:
Vitotronic control unit installation and service
instructions
Overview sub-menu to menu "5"
"Status" display "Service" display: Process information
0 Phase
1 Boiler water temperature
2 Flue gas temperature
3 Ionisation current
(cont.)
Calling up all meter readings:
—
Resetting meter readings:
—
4.
5. S to confirm; "6" is shown under "Status".
6. S to confirm the deletion. If deletion was success-
7. S to change to the operating display.
Temporarily display process information in the operating display:
—
until "6" is shown under "Service".
ful, "1" is shown under Service; if it failed, "0" is
shown.
Unit/scale
1
30
°C
°C
I in 1/10
μ
Burner control unit
A
33